%0 Journal Article %A Rosický, Jiří %T Model theoretic approach to concrete categories %J Commentationes Mathematicae Universitatis Carolinae %D 1979 %P 192-193 %V 20 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1979__20_1_a20/ %G en %F CMUC_1979__20_1_a20